Atomic processes in nova shells

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dc.contributor.advisorWarner, Brianen_ZA
dc.contributor.authorSmits, Derck Peteren_ZA
dc.date.accessioned2015-12-28T06:10:14Z
dc.date.available2015-12-28T06:10:14Z
dc.date.issued1990en_ZA
dc.descriptionBibliography: pages 155-165.en_ZA
dc.description.abstractThe unusual spectra of the spatially-resolved nova shells of DQ Her, T Aur and CP Pup are reviewed. Because calculations for these conditions have not been made, recombination models of HI, HeI and CNO from a neutral to a doubly ionized state were constructed. The models are described and the results presented for densities at various temperatures. A photoionization model is also described. The effects of non-uniform density distributions in nova shells have been investigated and the observational consequences discussed. A model of the CP Pup shell is described and the evolution of this plasma during the nova's constant luminosity phase traced. The properties of neon novae are summarized and compared with the features seen in the optical spectra of old classical novae. Enhanced neon abundances are used in the model of the CP Pup Shell to investigate its effect on the evolution of the shell. Finally, the results of some near-infrared observations made on the shells of CP Pup, RR Pic and T Pyx are reported.en_ZA
dc.identifier.apacitationSmits, D. P. (1990). <i>Atomic processes in nova shells</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Astronomy. Retrieved from http://hdl.handle.net/11427/16000en_ZA
dc.identifier.chicagocitationSmits, Derck Peter. <i>"Atomic processes in nova shells."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Astronomy, 1990. http://hdl.handle.net/11427/16000en_ZA
dc.identifier.citationSmits, D. 1990. Atomic processes in nova shells. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Smits, Derck Peter AB - The unusual spectra of the spatially-resolved nova shells of DQ Her, T Aur and CP Pup are reviewed. Because calculations for these conditions have not been made, recombination models of HI, HeI and CNO from a neutral to a doubly ionized state were constructed. The models are described and the results presented for densities at various temperatures. A photoionization model is also described. The effects of non-uniform density distributions in nova shells have been investigated and the observational consequences discussed. A model of the CP Pup shell is described and the evolution of this plasma during the nova's constant luminosity phase traced. The properties of neon novae are summarized and compared with the features seen in the optical spectra of old classical novae. Enhanced neon abundances are used in the model of the CP Pup Shell to investigate its effect on the evolution of the shell. Finally, the results of some near-infrared observations made on the shells of CP Pup, RR Pic and T Pyx are reported. DA - 1990 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1990 T1 - Atomic processes in nova shells TI - Atomic processes in nova shells UR - http://hdl.handle.net/11427/16000 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/16000
dc.identifier.vancouvercitationSmits DP. Atomic processes in nova shells. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Astronomy, 1990 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/16000en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Astronomyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherCataclysmic variable starsen_ZA
dc.subject.otherStars, Newen_ZA
dc.subject.otherAstrophysicsen_ZA
dc.titleAtomic processes in nova shellsen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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